$776+ Cheap flights from Portland, ME (PWM) to Portugal
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LIS
Nov 30 — Dec 71
Round-trip
1 adult, Economy
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Find cheap flights from Portland to Portugal with Cheapflights
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Portland to PortugalExplore the most affordable flight options available from Portland to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 31, 2026.
Explore the most affordable flight options available from Portland to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 31, 2026.
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/104:00 pm -
2 stops18h 25m
Thu 12/1710:15 am -
1 stop19h 06m
Deal found 10/26![Delta logo]()
$806
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:00 am -
1 stop21h 30m
Thu 12/1712:35 pm -
2 stops16h 24m
Deal found 10/26![United Airlines logo]()
$809
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/89:46 am -
1 stop19h 19m
Mon 11/165:00 am -
2 stops21h 51m
Deal found 10/29![United Airlines logo]()
$846
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/127:00 am -
1 stop20h 10m
Sat 12/1910:15 am -
1 stop13h 15m
Deal found 10/28![United Airlines logo]()
$859
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/301:20 pm -
1 stop13h 55m
Wed 1/65:55 am -
2 stops23h 04m
Deal found 10/28![Delta logo]()
$951
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/308:00 am -
2 stops22h 45m
Wed 1/66:00 am -
2 stops20h 03m
Deal found 10/28![United Airlines logo]()
$1,075
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/73:20 pm -
1 stop13h 10m
Fri 12/116:00 am -
2 stops20h 29m
Deal found 10/25![United Airlines logo]()
$1,084
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2310:50 am -
1 stop16h 20m
Mon 11/307:50 pm -
2 stops28h 35m
Deal found 10/26![United Airlines logo]()
$1,086
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/198:49 am -
2 stops19h 31m
Fri 11/275:00 am -
2 stops23h 21m
Deal found 10/27![United Airlines logo]()
$1,087
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/79:12 am -
1 stop17h 58m
Fri 12/1111:20 am -
2 stops41h 04m
Deal found 10/27![United Airlines logo]()
$1,089
This Air Canada deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/79:12 am -
2 stops20h 28m
Fri 12/1111:20 am -
2 stops39h 10m
Deal found 10/29![Air Canada logo]()
$1,092
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/193:41 pm -
1 stop12h 49m
Fri 11/276:00 am -
2 stops22h 21m
Deal found 10/27![United Airlines logo]()
$1,098
Best flights from Portland to PortugalDiscover carefully curated flight deals from Portland to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 31, 2026.
Discover carefully curated flight deals from Portland to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 31, 2026.
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/303:12 pm -
2 stops38h 23m
Sat 2/65:00 am -
2 stops23h 26m
Deal found 10/28![Delta logo]()
$776
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/153:13 pm -
1 stop11h 57m
Sat 2/275:00 am -
2 stops18h 50m
Deal found 10/29![United Airlines logo]()
$778
This KAYAK deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/307:10 am -
2 stops23h 50m
Sat 2/66:00 am -
2 stops20h 03m
Deal found 10/28![Multiple Airlines logo]()
$878
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/303:12 pm -
2 stops38h 23m
Sun 2/75:00 am -
2 stops23h 59m
Deal found 10/28![Delta logo]()
$776
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/307:45 pm -
1 stop31h 25m
Sat 2/65:00 am -
2 stops21h 03m
Deal found 10/28![United Airlines logo]()
$785
This Delta deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/303:12 pm -
2 stops45h 18m
Sun 2/711:30 am -
2 stops17h 29m
Deal found 10/28![Delta logo]()
$784
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/307:45 pm -
2 stops38h 35m
Sun 2/76:00 am -
2 stops20h 03m
Deal found 10/28![United Airlines logo]()
$789
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/104:00 pm -
2 stops18h 25m
Thu 12/1710:15 am -
1 stop19h 06m
Deal found 10/26![Delta logo]()
$806
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/107:00 am -
2 stops27h 10m
Thu 12/1712:35 pm -
2 stops16h 24m
Deal found 10/26![United Airlines logo]()
$821
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/309:40 am -
2 stops17h 30m
Sun 2/710:15 am -
2 stops14h 06m
Deal found 10/28![United Airlines logo]()
$846
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/127:00 am -
1 stop20h 10m
Sat 12/1910:15 am -
1 stop13h 15m
Deal found 10/28![United Airlines logo]()
$859
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/17:08 pm -
1 stop10h 12m
Fri 1/85:00 am -
2 stops21h 03m
Deal found 10/27![United Airlines logo]()
$923
This United Airlines deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/127:10 am -
2 stops21h 10m
Mon 2/2210:15 am -
1 stop16h 14m
Deal found 10/28![United Airlines logo]()
$971
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2310:50 am -
1 stop16h 20m
Mon 11/307:50 pm -
2 stops28h 35m
Deal found 10/26![United Airlines logo]()
$1,086
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/79:51 am -
2 stops18h 39m
Fri 12/116:00 am -
2 stops18h 25m
Deal found 10/25![United Airlines logo]()
$1,089
Last-minute flights from Portland to PortugalDiscover last-minute flight deals from Portland to Portugal. Data last updated October 31, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Portugal. Data last updated October 31, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/89:46 am -
1 stop19h 19m
Mon 11/165:00 am -
2 stops21h 51m
Deal found 10/29![United Airlines logo]()
$846
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/163:41 pm -
1 stop11h 29m
Fri 11/205:00 am -
2 stops23h 21m
Deal found 10/25![United Airlines logo]()
$1,199
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/198:49 am -
2 stops19h 31m
Fri 11/275:00 am -
2 stops23h 21m
Deal found 10/27![United Airlines logo]()
$1,087
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/193:41 pm -
1 stop12h 49m
Fri 11/276:00 am -
2 stops22h 21m
Deal found 10/27![United Airlines logo]()
$1,098
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/193:41 pm -
1 stop12h 49m
Sun 11/2912:30 pm -
2 stops40h 22m
Deal found 10/27![United Airlines logo]()
$1,200
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/205:50 am -
1 stop22h 40m
Fri 11/276:00 am -
2 stops22h 21m
Deal found 10/27![United Airlines logo]()
$1,299
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/215:08 pm -
2 stops59h 22m
Sun 11/2912:30 pm -
2 stops40h 22m
Deal found 10/27![United Airlines logo]()
$1,166
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/227:35 pm -
2 stops32h 55m
Sun 11/2912:30 pm -
2 stops40h 22m
Deal found 10/27![United Airlines logo]()
$1,154
This United Airlines deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2310:50 am -
1 stop16h 20m
Mon 11/307:50 pm -
2 stops28h 35m
Deal found 10/26![United Airlines logo]()
$1,086
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/233:41 pm -
1 stop12h 49m
Sun 11/2912:30 pm -
2 stops40h 22m
Deal found 10/27![United Airlines logo]()
$1,150
This Delta deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/236:27 am -
2 stops21h 33m
Sun 11/2911:30 am -
2 stops28h 29m
Deal found 10/27![Delta logo]()
$1,178
This United Airlines deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/233:41 pm -
1 stop12h 49m
Fri 11/276:00 am -
2 stops22h 21m
Deal found 10/27![United Airlines logo]()
$1,306
Find flight deals from Portland to Portugal
Keep the following information in mind while searching for Portland to Portugal flight deals. Data was last updated October 31, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $739 (Air France) |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland to Portugal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 31, 2026.
Use the filters below to find and compare flights from Portland to Portugal that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandPorto
PWM Portland - OPO Porto
PWMOPO
Portland
Sat 1/30
3:12 pm-10:35 am
2 stops38h 23m
Porto
Sat 2/6
5:00 am-11:26 pm
2 stops23h 26m
$776
PortlandPorto
PWM Portland - OPO Porto
PWMOPO
Portland
Sat 1/30
3:12 pm-10:35 am
2 stops38h 23m
Porto
Sun 2/7
5:00 am-11:59 pm
2 stops23h 59m
$776
Quickest round-trip
PortlandLisbon
PWM Portland - LIS Lisbon Humberto Delgado
PWMLIS
Portland
Mon 2/15
3:13 pm-8:10 am
1 stop11h 57m
Lisbon Humberto Delgado
Sat 2/27
5:00 am-6:50 pm
2 stops18h 50m
$778
PortlandLisbon
PWM Portland - LIS Lisbon Humberto Delgado
PWMLIS
Portland
Sat 1/30
3:12 pm-5:30 pm
2 stops45h 18m
Lisbon Humberto Delgado
Sun 2/7
11:30 am-11:59 pm
2 stops17h 29m
$784
PortlandLisbon
PWM Portland - LIS Lisbon Humberto Delgado
PWMLIS
Portland
Sat 1/30
7:45 pm-8:10 am
1 stop31h 25m
Lisbon Humberto Delgado
Sat 2/6
5:00 am-9:03 pm
2 stops21h 03m
$785
PortlandPorto
PWM Portland - OPO Porto
PWMOPO
Portland
Sat 1/30
7:45 pm-3:20 pm
2 stops38h 35m
Porto
Sun 2/7
6:00 am-9:03 pm
2 stops20h 03m
$789
PortlandPorto
PWM Portland - OPO Porto
PWMOPO
Portland
Thu 12/10
4:00 pm-3:25 pm
2 stops18h 25m
Porto
Thu 12/17
10:15 am-12:21 am
1 stop19h 06m
$806
PortlandPorto
PWM Portland - OPO Porto
PWMOPO
Portland
Thu 12/10
7:00 am-3:10 pm
2 stops27h 10m
Porto
Thu 12/17
12:35 pm-11:59 pm
2 stops16h 24m
$821
PortlandLisbon
PWM Portland - LIS Lisbon Humberto Delgado
PWMLIS
Portland
Sat 1/30
9:40 am-8:10 am
2 stops17h 30m
Lisbon Humberto Delgado
Sun 2/7
10:15 am-7:21 pm
2 stops14h 06m
$846
PortlandLisbon
PWM Portland - LIS Lisbon Humberto Delgado
PWMLIS
Portland
Sat 12/12
7:00 am-8:10 am
1 stop20h 10m
Lisbon Humberto Delgado
Sat 12/19
10:15 am-6:30 pm
1 stop13h 15m
$859
Showing 1-10 of 15 resultsSorted by cheapest first
Best time to book a flight from Portland to Portugal
Have a flexible travel schedule? Discover the best time to fly to Portugal from Portland with our price prediction graph.
PWM-OPO
PWM-LIS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Portland to Portugal
PWM-PT0
PWM-OPO
PWM-LIS
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Portugal
Get insights into the airlines that provide service to Portugal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portugal. Reviews last updated October 31, 2026.
See what other customers who have flown with United Airlines from Portland to Portugal have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.3
Entertainment
7.1
Overall
7.3
Crew
8.1
Boarding
7.7
Food
6.7
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Comfort
7.3
Entertainment
7.1
Overall
7.3
Crew
8.1
Boarding
7.7
Food
6.7
Reviews
1 / 20
8.0
ExcellentAsha,Sep 2026
LGA - IAH
Related info for your journey
Find useful and relevant information for your journey from Portland to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Portland to Portugal
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Portugal by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Portland to Portugal by cabin class
Find flights from Portland to Portugal, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Portland and Portugal flights
Browse other Portland and Portugal flight options. Last updated on October 31, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Portland to Portugal flights
Consider these flights traveling from Portland to Portugal.
Fly to Portugal regions
Consider these flights traveling to Portugal regions.
Top airline flying from Portland to Portugal
Discover the top airline that operate flights from Portland to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 31, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$550 | Average$707 | FlexibilityNo cancel fee | On-time69% |